$FBA6/64422: Send Tone to Tape
Jump from $FBF0:
FBA6: A5 BD LDA $BD ; RS232 Output Parity/Tape Byte temporary
FBA8: 4A LSR
FBA9: A9 60 LDA #$60
FBAB: 90 02 BCC $FBAF
Jump from $FBE7:
FBAD: A9 B0 LDA #$B0
Jump from $FBAB, $FC6C:
FBAF: A2 00 LDX #$00
Jump from $FBD5:
FBB1: 8D 06 DC STA $DC06 ; CIA1: Timer B Low-Byte (Tape, Serial Port)
FBB4: 8E 07 DC STX $DC07 ; CIA1: Timer B High-Byte (Tape, Serial Port)
FBB7: AD 0D DC LDA $DC0D ; CIA1: Interrupt (IRQ) Control Register
FBBA: A9 19 LDA #$19
FBBC: 8D 0F DC STA $DC0F ; CIA1: Control Register B
FBBF: A5 01 LDA $01 ; 6510 On-chip 8-bit Input/Output Register
FBC1: 49 08 EOR #$08
FBC3: 85 01 STA $01 ; 6510 On-chip 8-bit Input/Output Register
FBC5: 29 08 AND #$08
FBC7: 60 RTS
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